Corona poling of liquid crystalline polymers with nitroazobenzene side chains

The orientational behavior of liquid crystalline polymers with para-nitro a zobenzene as side chains under electric field was studied by UV-visible spe ctroscopy. The results showed that lambda(max) of the poled polymer films w as around 394nm, compared to that of the unpoled films, the absorption decr eased due to poling. The orientational parameters increased linearly with t he increase of the electric field. The temporal stability of the poled poly mer film is good at room temperature. This kind of materials showed promise application as nonlinear optical component in photorefractive polymers.